Year	% of GDP
2003	44.730537755877144
2004	47.00468004432762
2005	47.57822430159288
2006	45.59161341519442
2007	45.96033411445788
2008	45.128603608906886
2009	43.48364644468693
2010	43.19150447506748
2011	43.85273485474011
2012	42.5052095392452
2013	42.56175602639345
2014	41.70459532317723
2015	39.71261701697415
2016	37.467144432799046
2017	36.795564265570476
2018	35.98395530703095
2019	35.04282055386586
2020	35.28288883269621
2021	35.82843014367943